Introduction to Megalo

Located after the [Base Variant](Introduction to Game Variants) in PvP and Forge game variants, Megalo provides game developers access to nearly every aspect of the gameplay in a gametype.

Megalo provides game developers the ability to script the gameplay experience, and therefore is a powerful engine which enables rapid prototyping and iteration of gametypes. Since Halo: Reach, every single gametype ranging from Slayer to Invasion to Extraction was made using Megalo. It also allows the developers behind Halo to patch bugs and introduce new features (and gametypes) through the Matchmaking and file sharing systems instead of sending out a costly Title Update.

Structure

In Halo 4, the Megalo data consists of the following:

Name	Description
Player Traits	Contains up to 16 trait sets which can be referenced by MegaloScript
User Defined Options	Contains up to 16 settings to display in the gametype options menu
Strings	Contains tables of localized strings which can be referenced by MegaloScript
Name and Descriptions	Localized variant name, description, and intro description
Category Name	Localized category name
Variant Icon	Specifies the icon of this Megalo variant
Category	Specifies the category under which this Megalo variant belongs
Map Permissions	Controls which map has access to this gametype
Player Rating Parameters	Provides arguments to the player rating system
Global Game Options	Stores the global game options (e.g. score limit)
Map Loadouts	Contains map-specific loadouts
Menu Flags	Toggles the visibility of menu options and whether they are enabled
Conditions	Contains MegaloScript conditions
Actions	Contains MegaloScript actions
Triggers	Contains MegaloScript triggers
Game Statistics	Defines gametype-specific stats
Variables	Contains MegaloScript variables
HUD Widgets	Defines widgets to appear on a player's HUD
Events	Associates a game event with a trigger
Required Object Types	Specifies the object types a map must support to play this gametype
Object Filters	Defines a filter which can be used to quickly iterate through certain objects
Candy Spawner Filters*	Defines filters for candy spawners
Weapon Tuning**	Contains tuning options for most weapons (since TU5)

*Candy spawners are objects that create other objects such as Extraction decals in Extraction. Not much is known about them at this time. **Exists only if the values in prototype settings indicate that there is a weapon tuning data here